** Description changed:
+ [impact]
- Recent Linux kernels introduced a number of new syscalls ending in _time64 to
fix Y2038 problem; it appears recent glibc, including the version in focal,
test for the existence of these. systemd-nspawn in bionic (237-3ubuntu10.38)
doesn't know about these so blocks them by default. It seems however glibc
isn't expecting an EPERM, causing numerous programs to fail.
+ nspawn fails on armhf
+
+ [test case]
+
+ TBD
+
+ [regression potential]
+
+ any regression would likely break nspawn creation of containers,
+ particularly on armhf, but possibly on other archs
+
+ [scope]
+
+ this is needed only in bionic.
+
+ this is fixed upstream by commit
+ 6ca677106992321326427c89a40e1c9673a499b2 which was included first in
+ v244, so this is fixed already in focal and later.
+
+ [original description]
+
+ Recent Linux kernels introduced a number of new syscalls ending in
+ _time64 to fix Y2038 problem; it appears recent glibc, including the
+ version in focal, test for the existence of these. systemd-nspawn in
+ bionic (237-3ubuntu10.38) doesn't know about these so blocks them by
+ default. It seems however glibc isn't expecting an EPERM, causing
+ numerous programs to fail.
In particular, running do-release-upgrade to focal in an nspawn
container hosted on bionic will break as soon as the new libc has been
unpacked.
Solution (tested here) is to cherrypick upstream commit
https://github.com/systemd/systemd/commit/6ca677106992321326427c89a40e1c9673a499b2
A newer libseccomp is also needed but this is already being worked on,
see bug #1876055.
It's a pretty trivial fix one the new libseccomp lands, and there is
precedent for SRU-ing for a similar issue in bug #1840640.
https://patchwork.kernel.org/patch/10756415/ is apparently the upstream
kernel patch, which should give a clearer idea of which architectures
are likely to be affected - I noticed it on armhf.
** Changed in: systemd (Ubuntu Bionic)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: systemd (Ubuntu Bionic)
Importance: Undecided => Low
** Changed in: systemd (Ubuntu Bionic)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1883447
Title:
nspawn on some 32-bit archs blocks _time64 syscalls, breaks upgrade to
focal in containers
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